tests: rely on dummyssh being the default
This commit is exactly the result of running this command:
sed -i -e 's! *\(-e \|--ssh \|--config ui.ssh=\)[ \"]*$PYTHON[ \"]*$\(RUN\|\)TESTDIR/dummyssh[\"]* *! !g' -e '/^[ >]*ssh *=[ "]*$PYTHON[ "]*$\(RUN\|\)TESTDIR\/dummyssh[ "]*$/d' -e 's/^\( [$] .*[^ ]\) *$/\1/' *.t *.sh
Sometimes the tests can be simplified further, but I think it's
preferable to do the simplification separately.
Differential Revision: https://phab.mercurial-scm.org/D11245
cat >> $HGRCPATH <<EOF
[extensions]
narrow=
[ui]
[experimental]
changegroup3 = True
EOF